Hydraulic-cylinder lubricator



(No Model.)

J. G. GRAGEY.

HYDRAULIC CYLINDER LUBRIGATOR.

Patented Dec. 3, 1889 Invezzioi Aziies N. PETERS, Phow-L ulognphrr. Wathlnginm n c.

UNITED STATES PATENT OFFICE.

JAMES G. GRAOEY, OF ST. LOUIS, MISSOURI.

HYDRAULIC-CYLINDER LU BRICAT OR.

SPECIFICATION forming part of Letters Patent No. 416,598, dated December 3, 1889.

Application filed April 3, 1889. Serial No. 305,884. (No model.)

To all whom it may concern:

Be it known that I, JAMES G. GRACEY, of St. Louis, Missouri, have made a new and useful Improvement in Hydraulic-Cylinder Lubricators, of which the following is a full, clear, and exact description.

The improvement relates to that class of hydraulic-cylinder lubricators in which the lubricant is applied to a holder which travels with the piston and piston-rod in the movement thereof to and fro in the cylinder, and in its movement transfers the lubricant to the cylinder-shell, and has for its object an improved means for adjusting the lubricantholder and keeping it in contact with the inner'surface of the cylinder, substantially as hereinafter described and claimed, aided by the annexed drawings, making part of this specification, and of which- Figure 1 is a cross-section of a hydraulic cylinderhaving the improved lubricator in position; and Fig. 2, a vertical longitudinal section on the line 2 2, Fig. 1, looking to the right, as there shown.

The same letters of reference denote the same parts.

A represents the improved lubricator in position in a hydraulic cylinder 13; C, the piston-rod, which is clasped by the clamp composed of the two parts D D, which are pressed together by the screw-bolts (1 cl. The part D of the clamp is provided with a projecting arm d which is threaded at its upper end and provided with the two nuts (1 and cl", which serve to hold in place between them the lug F, the extremities whereof are firmly attached by the bolts 6 e to the lubricatdrholder frame E, which is a metal spring-bow the upper and central portion whereof is frame E are pressed outwardly by the curved expansion-braces G G the outer ends whereof are firmly attached, respectively, to the ends of the said frame by the screw-bolts e e. The inner ends of the braces G G are adapted to apply, respectively, to the outer edges of the two wedge-shaped parts 01 d of the clamp parts D D, as shown, and are each provided with a longitudinal slot g, Fig. 2, for receiving the screw-bolt d, by which, together with the nut and beveled washers thereof, the said inner'ends of the braces G G are held in place against the said outer edges ofthe wedge-shaped parts d (1 Any suitable material of an elastic spongy which in turn is covered with tanned sheeppelt c with the wool on-which is, say, about two and a half to three inches thick-and both of said layers are riveted to the frame E by a suificient number of rivets e extending through the sheep skin, leather, and frame. i

' The operation of the improvement is as follows: The lubricant is fed to the lubricant- "holder (which in the present instance is the wool) in any suitable manner. By means of theproper adjustment of the nuts d and cl on the projecting arm (1 the lug F is caused to press upwardly against the frame E, and thereby produce the desired pressure of the upper and central portion of the lubricantholder against the cylinder-surface. The desired pressure of the lower and end portions of the lubricant-holder against the cylindersurface is obtained by properly shaping the expanding braces G G, so as to produce said desired pressure when the outer ends of the braces are firmly attached to the end portions of the lubricant-holder, as shown, and the inner ends of the braces are attached to the edges of the wedge-shaped parts (1 d after being placed so that the bolt d rests against the upper ends of the slots in said braces.

By continued use the spongy lubricantholder naturally becomes more or less compressed, and thereby fails to touch or to press against with sufficient force the cylinder-surface. To easily remedy the above-described condition is the main object of this improvement, and it is effected in the following manner: Slack up the nut on the bolt d so as to allow the ends of the braces to slide freely up anddown the length of the slots therein. By means of the nuts d and d on the projecting arm (1 raise the lug, and thereby the frame and holder until a desired pressu'reot the central part of the holder against the cylindersurface is again obtained. WVhen the upper part of the frame and holder are thus raised,

7 of the lower parts of the holder against the cylinder-surface can then, or at any other time, be regulated and set, as desired, with exactness, independently of the upper parts, by the proper manipulation and adjustment of the inner ends of the braces G G. The

outward pressure of the lower parts of the holder is increased by sliding the inner ends of the braces upwardly, and decreased by a reverse movement.

The herein-described improvement maybe attached to the piston of the cylinder instead of to the piston-rod thereof Without departing from the essence of my invention.

I claim 1. A hydraulic-cylinder lubricator having the lubricant-holder attached to a spring-bow, which inturn is supported from the pistonrod, substantially as described.

2. The combination of the lubricant-holder e the spring-b0w E, the piston-rod C, the clamp D D, having the wedge-shaped parts d (1 and the projecting arm (1 the lug F, and the braces G G, substantially as and for the purpose described.

\Vitness my hand March 27, 1889.

JAMES G. GRACEY. it-messes:

O. D. MOODY, D. W. O. SANFORD. 

